Discuss Additional consumer unit - tails in trunking - how? in the DIY Electrical Advice area at ElectriciansForums.net

Reaction score
10
I need to install an additional consumer unit. Normally I would put the existing tails into Henley blocks and feed both CU from there, but in this case there is an isolation switch, and the output tails are in metal trunking from the isolator to the CU. The new CU is going next to the old one on the other side of the trunking.

Can I 'daisy chain' the new CU from the old one (taking the new feed from the input of the main switch), or alternatively take new tails from the isolator? I can definitely get 2 x 16mm cables in the isolator - not sure about the old CU switch.

Or should I bring the existing tails out of the trunking into blocks, then both feeds back in the trunking? Can the blocks go INSIDE the trunking? Space isn't an issue I have literally an entire wall of a room - but I don't want it to look like a dogs breakfast either. What's the best method to accomplish this?

This is all in an outbuilding fed by a 60a mcb and 20 m of 16 mm swa to a local isolator (where the trunking starts) if that makes any difference.
 
I wouldn't consider connecting from the live side of the existing consumer unit or the main switch. Your last suggestion is the best option.
 

Reply to Additional consumer unit - tails in trunking - how? in the DIY Electrical Advice area at ElectriciansForums.net

Similar Threads

I wondered if it is OK to have 2 x Main Switches in the same consumer unit. One feeding the RCBOs in the House and one feeding the CU in a garage...
Replies
16
Views
715
Hi, NAPIT report was carried out due to flood, all kitchen appliances, wall/light switches, fire/heaters etc need replacing. The electrician...
Replies
4
Views
888
Ok, most new Consumer unit seem to come with a 63A RCCB and two MCBs. Most house consumer units now will also have RCD of some type be it a dual...
Replies
24
Views
1K
Hi, The `power went out throughout the house this afternoon but only to the sockets, the lighting circuits are all fine. I went to the consumer...
Replies
9
Views
1K
Can a domestic consumer unit feed another consumer unit, via the Main Switch. Details are: domestic property with 100A single phase supply...
Replies
9
Views
438

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock